公开(公告)号：US3533076A

公开(公告)日：1970-10-06

申请号：US3533076D

申请日：1967-10-30

Applicant: BURROUGHS CORP

Inventor： PERKINS CORNELIUS C ,  FITZER DAYTON W

IPC: G06F9/46 ,  G06F9/40 ,  G06F15/02 ,  G06F9/06

CPC classification number: G06F15/02 ,  G06F9/4425

Abstract: 1,237,726. Data processing. BURROUGHS CORP. 15 Oct., 1968 [30 Oct., 1967], No. 48785/68. Heading G4A. Electronic data processing apparatus, e.g. an accounting machine, includes a keyboard for entering programme instructions and data and a memory for storing them, a plurality of variable function key means and indicator means signalling the active status of the key means, both key means and indicator means being programme-responsive, and the key means being operable for controlling the insertion and execution of subroutine instructions intermediate adjacent programme steps. An instruction counter driven by carry from a syllable counter addresses the (core) memory to access successive instruction words, each of which contains four syllables selected in turn by the syllable counter for decoding to control the machine. An instruction may activate any of a plurality of variable function manual keys on the keyboard and light corresponding lamps to indicate their active status. The operator may operate any of the activated keys (being guided by the lamps and a removable instruction strip above them) and if the key he operates is one of the activated ones its identity is decoded and added to the contents of a programme-settable table select register to address subroutine tables (in the core memory or a separate core store) to obtain an instruction to be executed. This instruction may cause a branch to a subroutine proper in the main core memory which is then executed, after which the normal programme proceeds. If the key operated was not one of the activated ones, the machine goes into an error routine and informs the operator of an error. Use of the machine for training operators is described.

公开(公告)号：US3533078A

公开(公告)日：1970-10-06

申请号：US3533078D

申请日：1967-12-04

Applicant: BURROUGHS CORP

Inventor： PERKINS CORNELIUS C ,  FITZER DAYTON W

IPC: G06F15/02 ,  G06F3/02 ,  G06F3/04 ,  G06F11/00

CPC classification number: G06F15/02